Correct
换岗
/ huàn gǎng /
Strokes
Definition
to relieve a sentry/to change the guard
Example
As a Verb
relieve a sentry/guard; change the guard
1
Měi
每
liǎng
两
xiǎoshí
小时
huàn
换
yī
一
cì
次
gǎng
岗
。
The guard is changed every two hours.
As a Verb
exchange posts; change jobs